1388912875 has 32 divisors (see below), whose sum is σ = 1986341760. Its totient is φ = 949824000.

The previous prime is 1388912831. The next prime is 1388912897. The reversal of 1388912875 is 5782198831.

It is a happy number.

It is not a de Polignac number, because 1388912875 - 2¹¹ = 1388910827 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355935 + ... + 359815.

It is an arithmetic number, because the mean of its divisors is an integer number (62073180).

Almost surely, 2^1388912875 is an apocalyptic number.

1388912875 is a deficient number, since it is larger than the sum of its proper divisors (597428885).

1388912875 is an equidigital number, since it uses as much as digits as its factorization.

1388912875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312 (or 4302 counting only the distinct ones).

The product of its digits is 967680, while the sum is 52.

The square root of 1388912875 is about 37268.1214310569. The cubic root of 1388912875 is about 1115.7280062706.

The spelling of 1388912875 in words is "one billion, three hundred eighty-eight million, nine hundred twelve thousand, eight hundred seventy-five".